2-Genome catalogue overview
Antton Alberdi
2023-12-17
Load libraries
suppressPackageStartupMessages(library(tidyverse))
suppressPackageStartupMessages(library(ape))
suppressPackageStartupMessages(library(distillR))
suppressPackageStartupMessages(library(ggtree))
suppressPackageStartupMessages(library(ggnewscale))
suppressPackageStartupMessages(library(ggtreeExtra))
suppressPackageStartupMessages(library(gridExtra))
suppressPackageStartupMessages(library(phytools))
suppressPackageStartupMessages(library(Rtsne))Load data
Working data objects are wrapped in the Rdata file created in the previous step.
load("data/data.Rdata")Genome phylogeny
#Get phylum colors from the EHI standard
phylum_colors <- read_tsv("https://raw.githubusercontent.com/earthhologenome/EHI_taxonomy_colour/main/ehi_phylum_colors.tsv") %>%
right_join(genome_metadata, by=join_by(phylum == phylum)) %>%
arrange(match(genome, genome_tree$tip.label)) %>%
select(phylum, colors) %>%
unique() %>%
arrange(phylum) %>%
select(colors) %>%
pull()
# Generate the phylum color heatmap
phylum_heatmap <- read_tsv("https://raw.githubusercontent.com/earthhologenome/EHI_taxonomy_colour/main/ehi_phylum_colors.tsv") %>%
right_join(genome_metadata, by=join_by(phylum == phylum)) %>%
arrange(match(genome, genome_tree$tip.label)) %>%
select(genome,phylum) %>%
mutate(phylum = factor(phylum, levels = unique(phylum))) %>%
column_to_rownames(var = "genome")
# Generate basal tree
circular_tree <- force.ultrametric(genome_tree, method="extend") %>% # extend to ultrametric for the sake of visualisation
ggtree(., layout = 'circular', size = 0.3, angle=45)## ***************************************************************
## * Note: *
## * force.ultrametric does not include a formal method to *
## * ultrametricize a tree & should only be used to coerce *
## * a phylogeny that fails is.ultramtric due to rounding -- *
## * not as a substitute for formal rate-smoothing methods. *
## ***************************************************************# Add phylum ring
circular_tree <- gheatmap(circular_tree, phylum_heatmap, offset=0.85, width=0.1, colnames=FALSE) +
scale_fill_manual(values=phylum_colors) +
geom_tiplab2(size=1, hjust=-0.1) +
theme(legend.position = "none", plot.margin = margin(0, 0, 0, 0), panel.margin = margin(0, 0, 0, 0))
# Flush color scale to enable a new color scheme in the next ring
circular_tree <- circular_tree + new_scale_fill()
# Add completeness ring
circular_tree <- circular_tree +
new_scale_fill() +
scale_fill_gradient(low = "#d1f4ba", high = "#f4baba") +
geom_fruit(
data=genome_metadata,
geom=geom_bar,
mapping = aes(x=completeness, y=genome, fill=contamination),
offset = 0.55,
orientation="y",
stat="identity")
# Add genome-size ring
circular_tree <- circular_tree +
new_scale_fill() +
scale_fill_manual(values = "#cccccc") +
geom_fruit(
data=genome_metadata,
geom=geom_bar,
mapping = aes(x=length, y=genome),
offset = 0.05,
orientation="y",
stat="identity")
#Plot circular tree
circular_tree
Genome quality
#Generate quality biplot
genome_biplot <- genome_metadata %>%
select(c(genome,domain,phylum,completeness,contamination,length)) %>%
arrange(match(genome, rev(genome_tree$tip.label))) %>% #sort MAGs according to phylogenetic tree
ggplot(aes(x=completeness,y=contamination,size=length,color=phylum)) +
geom_point(alpha=0.7) +
ylim(c(10,0)) +
scale_color_manual(values=phylum_colors) +
labs(y= "Contamination", x = "Completeness") +
theme_classic() +
theme(legend.position = "none")
#Generate contamination boxplot
genome_contamination <- genome_metadata %>%
ggplot(aes(y=contamination)) +
ylim(c(10,0)) +
geom_boxplot(colour = "#999999", fill="#cccccc") +
theme_void() +
theme(legend.position = "none",
axis.title.x = element_blank(),
axis.title.y = element_blank(),
axis.text.y=element_blank(),
axis.ticks.y=element_blank(),
axis.text.x=element_blank(),
axis.ticks.x=element_blank(),
plot.margin = unit(c(0, 0, 0.40, 0),"inches")) #add bottom-margin (top, right, bottom, left)
#Generate completeness boxplot
genome_completeness <- genome_metadata %>%
ggplot(aes(x=completeness)) +
xlim(c(50,100)) +
geom_boxplot(colour = "#999999", fill="#cccccc") +
theme_void() +
theme(legend.position = "none",
axis.title.x = element_blank(),
axis.title.y = element_blank(),
axis.text.y=element_blank(),
axis.ticks.y=element_blank(),
axis.text.x=element_blank(),
axis.ticks.x=element_blank(),
plot.margin = unit(c(0, 0, 0, 0.50),"inches")) #add left-margin (top, right, bottom, left)
#Render composite figure
grid.arrange(grobs = list(genome_completeness,genome_biplot,genome_contamination),
layout_matrix = rbind(c(1,1,1,1,1,1,1,1,1,1,1,4),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3),
c(2,2,2,2,2,2,2,2,2,2,2,3)))
Functional overview
# Aggregate basal GIFT into elements
function_table <- genome_gifts %>%
to.elements(., GIFT_db)
# Generate basal tree
function_tree <- force.ultrametric(genome_tree, method="extend") %>%
ggtree(., size = 0.3) ## ***************************************************************
## * Note: *
## * force.ultrametric does not include a formal method to *
## * ultrametricize a tree & should only be used to coerce *
## * a phylogeny that fails is.ultramtric due to rounding -- *
## * not as a substitute for formal rate-smoothing methods. *
## ***************************************************************#Add phylum colors next to the tree tips
function_tree <- gheatmap(function_tree, phylum_heatmap, offset=0, width=0.1, colnames=FALSE) +
scale_fill_manual(values=phylum_colors) +
labs(fill="Phylum")
#Reset fill scale to use a different colour profile in the heatmap
function_tree <- function_tree + new_scale_fill()
#Add functions heatmap
function_tree <- gheatmap(function_tree, function_table, offset=0.5, width=3.5, colnames=FALSE) +
vexpand(.08) +
coord_cartesian(clip = "off") +
scale_fill_gradient(low = "#f4f4f4", high = "steelblue", na.value="white") +
labs(fill="Function fullness")
#Reset fill scale to use a different colour profile in the heatmap
function_tree <- function_tree + new_scale_fill()
# Add completeness barplots
function_tree <- function_tree +
geom_fruit(data=genome_metadata,
geom=geom_bar,
grid.params=list(axis="x", text.size=2, nbreak = 1),
axis.params=list(vline=TRUE),
mapping = aes(x=length, y=genome, color=completeness),
offset = 3.8,
orientation="y",
stat="identity") +
scale_color_gradient(low = "#cf8888", high = "#a2cc87") +
labs(color="Genome completeness")
function_tree
Functional ordination
# Generate the tSNE ordination
tSNE_function <- Rtsne(X=function_table, dims = 2, check_duplicates = FALSE)
# Plot the ordination
function_ordination <- tSNE_function$Y %>%
as.data.frame() %>%
mutate(genome=rownames(function_table)) %>%
inner_join(genome_metadata, by="genome") %>%
rename(tSNE1="V1", tSNE2="V2") %>%
select(genome,phylum,tSNE1,tSNE2, length) %>%
ggplot(aes(x = tSNE1, y = tSNE2, color = phylum, size=length))+
geom_point(shape=16, alpha=0.7) +
scale_color_manual(values=phylum_colors) +
theme_minimal() +
labs(color="Phylum", size="Genome size") +
guides(color = guide_legend(override.aes = list(size = 5))) # enlarge Phylum dots in legend
function_ordination